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作者Shih, Min-Yen;Chung, Ling-Ho;Liu, Hou-Chun;Chen, Yan-Hong;You, Chen-Feng
出版日期20230206
著作名稱Tracing sediments provenance in Puli Basin using Sr-Nd isotopic compositions
會議論文集第七屆台菲地球科學國際會議
頁數79
會議名稱第七屆台菲地球科學國
會議地點台南
會議日期20230206
主辦單位國立成功大學
國際性會議Y
其他資訊 http://www.edsrc.ncku.edu.tw/tpesic/
主題地質
摘要The Puli basin is the largest basin within the mountains in the orogenic belt of
Taiwan. It was formed owing to crustal uplift and river erosion. Faults, folds, and
crustal movements might change river flow paths draining through the basin, thereby
leading to sediments transported from variable sources. At present, the river, namely
Nankang River, flowing through the Puli basin are too small to offer sufficient
sediments for the basin. The Zhuoshui River, a larger river nearby, is the potential
alternative source providing a large amount of sediment and shows an apparent flow
path change from north-south to east-west. Accordingly, the objective of this project
is to testify to whether the sediments in the Puli basin come from different areas.
Strontium and neodymium isotopic composition of the sediments in the basin and
potential provenances were analyzed for source identification. The isotopic data
suggest that “Meichi sandstone,” “Lushan formation,” and “River sediment” are
sensitively distinguished and could be classified as different End-members.
Temporal changes in the basin sediment provenance and their geological
significance were determined based on the strontium and neodymium data by the
unpaired independent T-test analyses coupled with the Monte Carlo method.
系統號NO000006674

Oct 17 2023 15:24:22
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